I never use this dang list and it just falls out of date far too easily. Dropping for my own sanity.

Fixes #23360 by restoring just the offset class generation to our grid
framework mixins. Also restores the `make-col-offset` mixin.

Docs have been restored to illustrate this behavior and merged with the
newer margin utilities examples.

It was removed in 6d64afe5.

Reduce liquid's whitespace for a few pages and move about menu to the end.

Also fix a couple of typos while at it and change header tags' order.

docs: New favicons and add a service worker

Include everything for most browsers to work including Android.

Kept favicon.ico to the root dir.

Also added a manifest.json for PWA.

Uses some if/else action to ensure there's readable text on hover. Swapped out a hex value to a variable while I was in there.

Fixes #23398, fixes #23351.

Fixes #23397

Just fixes small typo

* Remove remaining references to v4 Alpha

This commit removes the remaining refrences to the v4 Alpha website and replaces them with the
corresponding v4 Beta ones.

**Note:** We have to hard code the current docs version at some places. Wouldn't it be good to have a `/docs/latest/` redirect to solve this "issue" in the future?

* Don't update the domain in the CNAME file

There is no _custom.scss file anymore.